... goal of one-subject, one-page (or one-screen) for eachdocument. The subject should be specified in the subject line, and thecontent should relate to the stated subject. For two subjects, write ... abstracts and index journals, bib-liographies, and other compilations.Current-awareness services, including contents journals and SDIservices.General and specialized databases available for on-line ... . and electric-field focusing . . . to maximize the RF power delivered to a tumor site’’(1992, 2 36) .Altered QuotationsUse square brackets to mark any alterations you have made to the quo-tation....